class AddMissingColumns < ActiveRecord::Migration
  def self.up
    add_column :centros, :created_at, :datetime
    add_column :centros, :updated_at, :datetime
    
    add_column :facturas, :ejecutivo_id, :integer
    
  end

  def self.down
    remove_column :facturas, :ejecutivo_id
    
    remove_column :centros, :updated_at
    remove_column :centros, :created_at
  end
end
